The diagram (Figure 4.31) shows two rods P and Q of the same size, placed end to end in thermal contact and well lagged at the sides. The outer ends of P and Q are kept at 0 ∘ C and 10 0 ∘ C. The ther

Question

The diagram (Figure 4.31) shows two rods $P$ and $Q$ of the same size, placed end to end in thermal contact and well lagged at the sides. The outer ends of $P$ and $Q$ are kept at $0^{\circ}$ C and $10 0^{\circ}$ C. The thermal conductivity of $P$ is four times that of $Q$ . What is the steady-state temperature of the interface?

TestHub · Accepted Answer

In steady state, 4 K ( T − 0 ) = K ( 100 − T ) . So 5 T = 100 and T = 2 0 ∘ C. A.

Physics - Heat & Thermo Question with Solution | TestHub

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